edu.mit.jverbnet.index
Class VerbIndex

java.lang.Object
  edu.mit.jverbnet.util.AbstractHasLifecycle
      edu.mit.jverbnet.index.VerbIndex

All Implemented Interfaces:

IVerbIndex, IHasLifecycle, Iterable<IVerbClass>

public class VerbIndex
extends AbstractHasLifecycle
implements IVerbIndex

Default implementation of the IVerbIndex interface.

Since:

JVerbnet 1.0.0

Version:

1.0.0

Author:

Mark A. Finlayson

Nested Class Summary

Nested classes/interfaces inherited from interface edu.mit.jverbnet.util.IHasLifecycle

IHasLifecycle.ObjectClosedException

Constructor Summary

VerbIndex(File file)
Creates a new verb index that uses the data at the specified location.

VerbIndex(URL url)
Creates a new verb index that uses the data at the specified location.

Method Summary

protected <K,V> Map<K,Set<V>>	compressAndMakeUnmodifiable(Map<K,Set<V>> map) Utility method for reallocating and making unmodifiable a map of sets.
protected IVersion	determineVersion() Determines the version of verbnet, as best is able.
protected void	doClose() Subclasses should put tear-down, closing code in this method.
protected boolean	doIsOpen() Subclasses should put code that determines whether the object is open in here.
protected boolean	doOpen() Subclasses should put initialization code in this method.
Set<IMember>	getMembers(IWordnetKey key) Returns all members in the index with the specified wordnet key.
Set<IMember>	getMembers(String grouping) Returns all members in the index with the specified grouping.
IVerbClass	getRootVerb(String id) Returns the root verb class with the specified id, or null if no such verb class can be found in the index.
protected <K,V> Set<V>	getSetForKey(Map<K,Set<V>> map, K key) Utility method for filling in a map of keys to sets.
IVerbClass	getVerb(String id) Returns the verb class with the specified id, or null if no such verb class can be found in the index.
IVersion	getVersion() The version of the index.
protected Map<String,IVerbClass>	initVerbByIdMap() Initialization code for reading the verbnet XML.
Iterator<IVerbClass>	iterator() Returns an iterator over all verb classes in the index, in the order they are encountered in the data files.
Iterator<String>	iteratorGroups() Returns an iterator over all groupings in the index, in their natural order.
Iterator<IVerbClass>	iteratorRoots() Returns an iterator over all root verb classes in the index, in the order they are encountered in the data files.
Iterator<IWordnetKey>	iteratorWordnetKeys() Returns an iterator over all wordnet keys in the index, in their natural order.
protected boolean	parse(XMLReader parser, InputStream in, String filename) Parses an XML input stream.
void	setErrorHandler(ErrorHandler eh) Sets the XML error handler that will be used by the index when parsing XML files.

Methods inherited from class edu.mit.jverbnet.util.AbstractHasLifecycle

checkOpen, close, isOpen, open

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface edu.mit.jverbnet.util.IHasLifecycle

close, isOpen, open

Constructor Detail

VerbIndex

public VerbIndex(File file)

Creates a new verb index that uses the data at the specified location. The file may be a directory (which holds verbnet xml files), or a single xml file containing all the verbnet data.

Parameters:

file - the file or directory containing the verbnet data

Since:

JVerbnet 1.0.0

VerbIndex

public VerbIndex(URL url)

Creates a new verb index that uses the data at the specified location. The url may point to a directory (which holds verbnet xml files), or a single xml stream/file containing all the verbnet data.

Parameters:

url - the file or directory containing the verbnet data

Since:

JVerbnet 1.0.0

Method Detail

getVersion

public IVersion getVersion()

Description copied from interface: IVerbIndex

The version of the index. If the version cannot be determined, should return IVersion.UNKNOWN.

Specified by:

getVersion in interface IVerbIndex

Returns:

the version of the index, or IVersion.UNKNOWN

determineVersion

protected IVersion determineVersion()

Determines the version of verbnet, as best is able. If the version cannot be determined, returns IVersion.UNKNOWN.

Returns:

the version of verbnet in use, or IVersion.UNKNOWN

Since:

JVerbnet 1.0.0

doOpen

protected boolean doOpen()
                  throws IOException

Description copied from class: AbstractHasLifecycle

Subclasses should put initialization code in this method. If initialization fails, the method should not attempt to cleanup; it should just return false or throw an exception. The abstract lifecycle object takes care of calling the AbstractHasLifecycle.doClose() method if initialization fails.

Specified by:

doOpen in class AbstractHasLifecycle

Returns:

true if initialization succeeds; false otherwise

Throws:

IOException - if there is an IO error while initializing

setErrorHandler

public void setErrorHandler(ErrorHandler eh)

Sets the XML error handler that will be used by the index when parsing XML files. This setting will not take effect until the next time the index is opened

Parameters:

eh - the error handler to be used; may be null

Since:

JVerbnet 1.0.0

initVerbByIdMap

protected Map<String,IVerbClass> initVerbByIdMap()
                                          throws IOException

Initialization code for reading the verbnet XML.

Returns:

a map of verb class Ids to verb classes

Throws:

IOException - if there is an IO error

Since:

JVerbnet 1.0.0

parse

protected boolean parse(XMLReader parser,
                        InputStream in,
                        String filename)
                 throws IOException

Parses an XML input stream.

Parameters:

parser - the parser to use; may not be null

in - the input stream from which to read the data

Returns:

true if the parse failed and the initialization should halt; false otherwise

Throws:

IOException - if there is an IO error when parsing

{@link - NullPointerException} if the parser or input stream are null

Since:

JVerbnet 1.0.0

getSetForKey

protected <K,V> Set<V> getSetForKey(Map<K,Set<V>> map,
                                    K key)

Utility method for filling in a map of keys to sets. The map is queried for the set indexed under the specified key; if none is found, the set is created and added. The set is returned.

Parameters:

map - the map to query for the set indexed by the key

key - the key under which to look for the set

Returns:

the set in the map for the key; never null

Since:

JVerbnet 1.0.0

compressAndMakeUnmodifiable

protected <K,V> Map<K,Set<V>> compressAndMakeUnmodifiable(Map<K,Set<V>> map)

Utility method for reallocating and making unmodifiable a map of sets.

Parameters:

map - the map whose set values should be reallocated and made unmodifiable; the map itself is made unmodifiable

Returns:

the new unmodifiable map with unmodifiable set values

Since:

JVerbnet 1.0.0

doIsOpen

protected boolean doIsOpen()

Description copied from class: AbstractHasLifecycle

Subclasses should put code that determines whether the object is open in here. Returns true if the object is open; false otherwise.

Specified by:

doIsOpen in class AbstractHasLifecycle

Returns:

true if the object is open; false otherwise.

doClose

protected void doClose()

Description copied from class: AbstractHasLifecycle

Subclasses should put tear-down, closing code in this method. This method should be able to clean up after a failed attempt to AbstractHasLifecycle.open() the object.

Specified by:

doClose in class AbstractHasLifecycle

getVerb

public IVerbClass getVerb(String id)

Description copied from interface: IVerbIndex

Returns the verb class with the specified id, or null if no such verb class can be found in the index. Ids are usually of the form 'verb-##.#', e.g., 'accompany-51.7'.

Specified by:

getVerb in interface IVerbIndex

Parameters:

id - the id of the class

Returns:

the verb with the specified id, or null if none

getRootVerb

public IVerbClass getRootVerb(String id)

Description copied from interface: IVerbIndex

Returns the root verb class with the specified id, or null if no such verb class can be found in the index. Ids are usually of the form 'verb-##.#', e.g., 'accompany-51.7'.

Specified by:

getRootVerb in interface IVerbIndex

Parameters:

id - the id of the class

Returns:

the verb with the specified id, or null if none

getMembers

public Set<IMember> getMembers(IWordnetKey key)

Description copied from interface: IVerbIndex

Returns all members in the index with the specified wordnet key. A null key indicates all members that have no key specified.

Specified by:

getMembers in interface IVerbIndex

Parameters:

key - the key for which members should be retrieved; may be null

Returns:

a set of members with the specified wordnet keys, or an empty set if none; will never return null

getMembers

public Set<IMember> getMembers(String grouping)

Description copied from interface: IVerbIndex

Returns all members in the index with the specified grouping. A null, empty, or all whitespace grouping indicates all members that have no grouping specified.

Specified by:

getMembers in interface IVerbIndex

Parameters:

grouping - the grouping for which members should be retrieved; may be null, empty, or all whitespace.

Returns:

a set of members with the specified grouping, or an empty set if none; will never return null

iterator

public Iterator<IVerbClass> iterator()

Description copied from interface: IVerbIndex

Returns an iterator over all verb classes in the index, in the order they are encountered in the data files.

Specified by:

iterator in interface IVerbIndex

Specified by:

iterator in interface Iterable<IVerbClass>

Returns:

an iterator over all verb classes in the index

iteratorRoots

public Iterator<IVerbClass> iteratorRoots()

Description copied from interface: IVerbIndex

Returns an iterator over all root verb classes in the index, in the order they are encountered in the data files.

Specified by:

iteratorRoots in interface IVerbIndex

Returns:

an iterator over all root verb classes in the index

iteratorWordnetKeys

public Iterator<IWordnetKey> iteratorWordnetKeys()

Description copied from interface: IVerbIndex

Returns an iterator over all wordnet keys in the index, in their natural order. The iterator will not return the 'null' wordnet key.

Specified by:

iteratorWordnetKeys in interface IVerbIndex

Returns:

an iterator over all wordnet keys in the index

iteratorGroups

public Iterator<String> iteratorGroups()

Description copied from interface: IVerbIndex

Returns an iterator over all groupings in the index, in their natural order. The iterator will not return the 'null' grouping.

Specified by:

iteratorGroups in interface IVerbIndex

Returns:

an iterator over all wordnet keys in the index